{"id":17412,"date":"2026-09-29T10:30:47","date_gmt":"2026-09-29T05:00:47","guid":{"rendered":"https:\/\/www.fast2sms.com\/help\/woocommerce-otp-not-received\/"},"modified":"2026-09-30T09:34:28","modified_gmt":"2026-09-30T04:04:28","slug":"woocommerce-otp-not-received","status":"publish","type":"post","link":"https:\/\/www.fast2sms.com\/help\/woocommerce-otp-not-received\/","title":{"rendered":"WooCommerce OTP Not Received? Causes and Fixes for SMS and WhatsApp OTP"},"content":{"rendered":"

A customer taps “Send OTP” on your WooCommerce login or checkout page, waits, and nothing comes. They tap again, then give up and leave. When WooCommerce OTP is not working, or customers keep saying they are not getting OTP, the cause is almost always on a short list: the SMS template and DLT setup, the number format, the wallet, a security limit, or WhatsApp not being available on that number.<\/p>\n

This guide is organised by symptom. Find what your customer sees (nothing arrives, the OTP comes late, “too many attempts”, the code is rejected, WhatsApp not sending OTP, SMS OTP not received in WooCommerce) and follow the cause and fix. It is written around the free WooCommerce SMS plugin “Fast2SMS – OTP Login & SMS Notifications”, but the DLT and delivery checks apply to any otp plugin for WooCommerce in India.<\/p>\n

Install Free Plugin<\/a>Signup Now<\/a><\/p>\n

\"WooCommerce
Match what your customer sees to the likely cause before you change any settings.<\/figcaption><\/figure>\n

First five checks when WooCommerce OTP is not working<\/h2>\n

Run these five checks before anything else. They clear most “OTP not received” tickets in minutes.<\/p>\n

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  1. Wallet balance.<\/strong> Open WP Admin > Fast2SMS. The header shows your wallet balance and SMS count. If the wallet is empty, no OTP goes out. Recharge from the link in the header.<\/li>\n
  2. API key.<\/strong> The Dashboard checks your API key live. If the key was revoked or changed in your Fast2SMS account, the plugin shows a warning across wp-admin. Enter the current key again.<\/li>\n
  3. OTP ID.<\/strong> On the OTP & Login tab, Smart OTP needs an OTP ID from your Fast2SMS account. A missing or wrong OTP ID means nothing can be sent.<\/li>\n
  4. Admin test.<\/strong> Use the test OTP option on the OTP & Login tab (“Test your OTP setup”). It sends a real OTP to a number you type and lets you verify it. If the test works but customers still complain, the problem is on their side (number, network, limits). If the test fails, the problem is in your setup.<\/li>\n
  5. Logs.<\/strong> The Logs tab shows the event, channel, masked number (like 98XXXXXX10), status, error and time. The error column usually tells you which section of this guide to read.<\/li>\n<\/ol>\n
    \"WooCommerce
    The OTP & Login tab: OTP ID, where OTP login is switched on, resend countdown and the admin test.<\/figcaption><\/figure>\n

    WooCommerce OTP not received at all<\/h2>\n

    The customer gets nothing on SMS or WhatsApp. Work through these causes in order.<\/p>\n

    Cause 1: setup problem on your side<\/h3>\n

    An empty wallet, a revoked API key or a wrong OTP ID stops every OTP for every customer. The five checks above fix it.<\/p>\n

    Cause 2: SMS template or DLT problem<\/h3>\n

    If your OTP goes by SMS, the telecom operator checks it against your DLT registration before delivery. A wrong header, an unapproved template or a broken PE-TM chain means the message is dropped. The SMS section below<\/a> covers each point.<\/p>\n

    Cause 3: wrong or badly formatted number<\/h3>\n

    The plugin works with Indian 10-digit mobile numbers only. A typo, a landline, or a number from outside India will not get an OTP. On the login box the customer sees “OTP sent to 98XXXXXX10” with an Edit link, so ask them to check the masked number and tap Edit if it is wrong. At checkout they can use “Verify a different number”.<\/p>\n

    Cause 4: WhatsApp only, and the number is not on WhatsApp<\/h3>\n

    If your OTP ID sends on WhatsApp with no SMS fallback, a customer without WhatsApp on that number gets nothing. See the WhatsApp section<\/a>.<\/p>\n

    SMS OTP not received in WooCommerce: DLT, DND and number format<\/h2>\n

    SMS OTP in India reaches the phone only if every DLT piece lines up. Check each one.<\/p>\n